Features: Experience enhances efficiency with our 3piece hexagonal shank three jaw chuck set, designing for quick drill bit changes across various power tool. Featuring a hexagonal shank designing, this chuck is slip resistant and durability, while its three jaw grip offers stable and secure holding for multiple drill bit size. For professional woodworkers, DIYer enthusiasts, home repair personnel, and artisans engaged in diverse crafting projects. Perfectly suited for woodworking, metalworking, home repairs, and a wide array of creative handcraft projects. Crafted from high quality alloy, this multifunctional tool accessory ensures long lastings performances and reliability in all your drilling tasks. Specifications: Component:Alloy Size:Approx.6.35x51mm/0.25x2inch Size:Approx.6.35x74.5mm/0.25x2.93inch Size:Approx.6.35x72mm/0.25x2.83inch Color:Black Package Includes: 3pcs/set Three Jaw Chuck note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.